Radio Receivers If a FET is used as the first AF amplifier in a transistor receiver, this will have the effect of Reducing the effect of noise at low modulation depths Improving the selectivity of the receiver Improving the effectiveness of the AGC Reducing the effect of negative-peak clipping Reducing the effect of noise at low modulation depths Improving the selectivity of the receiver Improving the effectiveness of the AGC Reducing the effect of negative-peak clipping ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The controlled oscillator synthesizer is sometimes preferred over the direct one because Its frequency stability is better It is relatively free of spurious frequency It does not require crystal oscillator It is a simpler piece of equipment Its frequency stability is better It is relatively free of spurious frequency It does not require crystal oscillator It is a simpler piece of equipment ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers The frequency generated by each decade in a direct frequency synthesizer is much higher than the frequency shown; this is done to Reduce the number of crystals required Reduce the number of decades Increase the frequency stability of the synthesizer Reduce the spurious frequency problem Reduce the number of crystals required Reduce the number of decades Increase the frequency stability of the synthesizer Reduce the spurious frequency problem ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers In a ratio detector the circuit is the same as in a discriminator, except that the diodes are reversed stabilization against signal strength variations is provided the linearity is worse than in phase discriminator the output is twice that obtainable from a similar phase discriminator the circuit is the same as in a discriminator, except that the diodes are reversed stabilization against signal strength variations is provided the linearity is worse than in phase discriminator the output is twice that obtainable from a similar phase discriminator ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers One of the main functions of the RF amplifier in a superheterodyne receiver is to Provide improved tracking Improve the rejection of the image frequency Increase the tuning range of the receiver Permit better adjacent-channel rejection Provide improved tracking Improve the rejection of the image frequency Increase the tuning range of the receiver Permit better adjacent-channel rejection ANSWER DOWNLOAD EXAMIANS APP
Radio Receivers Indicate the false statement. Noting that no carrier is transmitter with J3E, we see that Adjacent-channel rejection is more difficult The transmission is not compatible with A3E The receiver cannot use a phase comparator for AFC Production of AGC is a rather complicated process Adjacent-channel rejection is more difficult The transmission is not compatible with A3E The receiver cannot use a phase comparator for AFC Production of AGC is a rather complicated process ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS